scholarly journals Fractional spin fluctuations and quantum liquid signature in Gd2ZnIrO6

2021 ◽  
Vol 104 (13) ◽  
Author(s):  
Birender Singh ◽  
Deepu Kumar ◽  
Vivek Kumar ◽  
Michael Vogl ◽  
Sabine Wurmehl ◽  
...  
1971 ◽  
Vol 32 (C1) ◽  
pp. C1-221-C1-223
Author(s):  
P. J. FORD ◽  
C. RIZZUTO ◽  
E. SALAMONI ◽  
P. ZANI

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-183-C8-184 ◽  
Author(s):  
J. J. Milczarek ◽  
K. Mikke ◽  
E. Jaworska

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Jonathan Pelliciari ◽  
Seher Karakuzu ◽  
Qi Song ◽  
Riccardo Arpaia ◽  
Abhishek Nag ◽  
...  

AbstractIn ultrathin films of FeSe grown on SrTiO3 (FeSe/STO), the superconducting transition temperature Tc is increased by almost an order of magnitude, raising questions on the pairing mechanism. As in other superconductors, antiferromagnetic spin fluctuations have been proposed to mediate SC making it essential to study the evolution of the spin dynamics of FeSe from the bulk to the ultrathin limit. Here, we investigate the spin excitations in bulk and monolayer FeSe/STO using resonant inelastic x-ray scattering (RIXS) and quantum Monte Carlo (QMC) calculations. Despite the absence of long-range magnetic order, bulk FeSe displays dispersive magnetic excitations reminiscent of other Fe-pnictides. Conversely, the spin excitations in FeSe/STO are gapped, dispersionless, and significantly hardened relative to its bulk counterpart. By comparing our RIXS results with simulations of a bilayer Hubbard model, we connect the evolution of the spin excitations to the Fermiology of the two systems revealing a remarkable reconfiguration of spin excitations in FeSe/STO, essential to understand the role of spin fluctuations in the pairing mechanism.


2021 ◽  
Vol 103 (10) ◽  
Author(s):  
K. Jenni ◽  
S. Kunkemöller ◽  
P. Steffens ◽  
Y. Sidis ◽  
R. Bewley ◽  
...  

2021 ◽  
Vol 103 (20) ◽  
Author(s):  
Niklas Witt ◽  
Erik G. C. P. van Loon ◽  
Takuya Nomoto ◽  
Ryotaro Arita ◽  
Tim O. Wehling

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